Prove that the circle `x^2 + y^2-6x-4y+9=0` bisects the circumference of the circle `x^2 + y^2 - 8x-6y+23=0`

If the circle x^2+y^2-6x-4y+9=0 bisects the circumference of the circle x^2+y^2-8x-6y+a=0 , then the value of a is ____

If the circle x^(2)+y^(2)+4x+22y+c=0 bisects the circumference of the circle x^(2)+y^(2)-2x+8y-d=0 then c+d

The value of k for which the circle x ^(2) +y ^(2) - 4x + 6y + 3=0 will bisect the circumference of the circle x ^(2) + y ^(2) + 6x - 4y + k =0 is

If the circle x^(2)+y^(2)=4 bisects the circumference of the circle x^(2)+y^(2)-2x+6y+a=0 , then 'a' equals

If the circle x^2+y^2+4x+22y+l=0 bisects the circumference of the circle x^2+y^2-2x+8y-m=0 , then l+m is equal to

If the circle x^(2)+y^(2)+4x+22y+c=0 bisects the circumference of the circle x^(2)+y^(2)-2x+8y-d=0, then (c+d) is equal to

If the circle x^(2)+y^(2)+2gx+2fy+c=0 bisects the circumference of the circles x^(2)+y^(2)=6,x^(2)+y^(2)-6x-4y+10=0 and x^(2)+y^(2)+2x+2y-2=0

If circle x^(2)+y^(2)-x+3y+m=0 bisect the circumference of circle x^(2)+y^(2)-2x+2y+1=0 then value of m is

If the circle x^(2)+y^(2)+4x+22y+a=0 bisects the circumference of circle x^(2)+y^(2)-2x+8y+b=0, then a-b equals to